Coal-bucket.



No.. 797,004. PATENTBD AUG. 15, 190.5.k

J. 15. ISAAGS.

COAL BUCKET.

APPLICATION FILED MAR. 27, 1905.

3 SHEETS-SEEET.

l fwn. y M if ,/WZ

No'. 797,004. f PATENTBD AUG. 15, 1905.

\ J. D. ISAAGS.

' 00MI BUCKET...-

APPLIGATION FILED MAR.Z7,V19U5.

3 SHEETS-SHEET 2.

,21A e ll No. 797,004. PATENTED AUG. 15, 1905.

J. D. ISAACS.

GOAL BUCKET.

APPLIUATION FILED MAB.. 27, 1905.

3 SHEETS-#SHEET 3.

I u.' u l` i UNITED sTATEs PATENT OFFICE.

Specification of Letters Patent.

Patented Aug. 15, 1905.

Application led March 27,1905. Serial No. 252,269.

To all whom, it may con/cern."

Be it known that I, JOHN D. IsAAos, a citi- Zen of the United States,residing at Oakland, Alameda county.v State of California, have inventedcertain new and useful Improvements in Coal-Buckets; and I herebydeclare the following to be a full, clear, and exact description of thesame.

My invention relates to that class of buckets variously termed coal ordredging or grappling or hoisting buckets, and particularly to that typein which the wings, leaves, or sections of the bucket are sectors whichwhen closed meet in a common point below. This general type of bucket,as distinguished from another type in which the sections arequadra-cylindrical, meeting in a common line below, has come-to be knownand called the orange-peel type from the fact that the leaves of thebucket are spherical sectors and when closed form approximately a hollowglobe or sphere resembling the cut shape of an orange-peel. Myinvention, while relating to this sector or orangepeel type in that theleaves meet below in a common point, diifers therefrom and is animprovement thereon in the fact that all horizontal sections of thebucket are straightsided-thatis, are bounded by straight linesthe bucketbeing composed of leaves or sections, each being a straight plane fromside to side horizontally, while curving from top to bottom vertically.In this shape of the leaves and the resulting bucket my inventionessentially consists, while it also consists in the novel constructionand arrangement of parts by which an operative, practical, andeconomical bucket is produced, which result is the object of theinvention, as will hereinafter clearly appear.

Referring to the accompanying drawings, Figure l is a perspective viewof my bucket. Fig. 2 is a side elevation of the same. Fig. 3 is a planof the same on thelinexxof Fig. .2. Fig. 4 is aside elevation of thebucket, showing it open, the near leaf being omitted.

The leaves, wings, or sections A of the bucket may be in any number.Four are here shown as representing the most practical number. Each leafis an isosceles triangle inverted-that is,^base uppermost. The baselineof each leaf and every horizontal section of the leaf is a straightline, while each side line of each leaf and every vertical section ofthe leaf isa curved line. The leaves when Closed form an inverted hollowpyramid with its walls straight horizontally and curved vertically.

In practical construction each leaf is formed with a toe piece or pointa detachably secured to it, so that the point of the bucket, whichreceives the wear` may be renewed when necessary.

Each leaf is hinged near each end or corner of its top-to the lower endof a hangerrod B, the foot of the rod entering between the ears of abracket c on the leaf and receiving a hinge-bolt a2. There are thuseight rods B, two rods suspending and hinging each leaf. This gives awide and very stable hingebase for the leaves. The leaves are furtherheld closely together at their corners by the short chains C diagonallyacross the corners and properly secured to the leaves.

The hanger-rods B converge upwardly and are pivoted at the point to ahead-casting D, to which the lowering and opening cable E is connectedthrough the intervention of the clevis e.

F is alower or foot casting, to which the levers c3, secured to andprojecting inwardly from the leaves A, are pivoted at points f.

The head-casting carries a single sheave G, and the foot-casting carriesa double sheave H.` The lower end of the hoisting and closing cable I isconnected by a link 2,' with the headcasting D, said cable thencepassing down to and around one of the lower sheaves H, thence up to andover lthe upper sheave G, thence down to and around the other lowersheave H, and thence up past a guide-pulley CZ on the head-casting toits winding down.

Suitable guides f on the foot-casting direct the course of the cableabout the sheaves H.

The operation of the bucket, as far as the opening and closing mechanismis concerned, is substantially similar to that of constructions alreadyknown--that is to say, as the y bucket descends under the tautlowering-cable E and slack hoisting-cable I the weight of thefoot-casting F, through the levers a3, throws and holds the leaves Aopen, as shown in Fig. 4:; but upon slacking up cable E and hoisting oncable I the foot casting is lifted and through the levers acau ses theleaves to close.

The wide hinge-base of each leaf, due to its connection near eachcorner,together with the corner-holding chains O, gives a rigidity tothe leaves and their joints which is not to be found in the commonorange-peel bucket, the hinge connection of which is in its centralvertical line, resulting' in a marked instability and looseness underhard usage and a failure to shut closely, especially at the corners.

Having thus described the invention, what is claimed as new, and desiredto be protected by Letters Patent, is-

1. A bucket ofthe class described composed of leaves, each leaf beingthe shape of an inverted isosceles triangle straight in horizontalsection and curved in vertical section, suitable hinge connections withthe top of each leaf near each end thereof, and suitable mechanism toopen and close said leaves.

2. A bucket of the class described composed of leaves, each leaf beingthe shape oi' an inverted isosceles triangle straight in horizontalsection and curved in vertical section, suitable hinge connections withthe top ot' each leaf,

chains connecting the adjacent ends of the able hinge connections Withthe top of each leaf near each end thereof, chains connecting theadjacent ends of the leaves at the corners of the bucket, and suitablemechanism to open and close said leaves.-

In Witness Whereoil I have hereunto set my hand.

JOHN D. ISAACS.

Witnesses:

GEORGE R. GAY, DANIEL EWING.

